Establishment of PTB Mammography Qualities Based on W-Anode and Al-Filtration at SSDL of Algiers

Mammography is an X-ray radiology of the breasts. It aims to detect abnormalities, sometimes signs of breast cancer, even before they have caused clinical symptoms. In order to obtain better diagnostics, several pictures of the breasts are taken from different angles. Although the limitation principle does not apply to doses received by patients, the other principle of radiation protection, namely optimization, remains applicable. In order to be able to correctly estimate the doses received by patients undergoing a mammography examination, it is necessary to follow an adequate dosimetric protocol, and to use calibrated dosimeters from recognized calibration laboratories. The SSDL of Algiers has already established X-ray qualities recommended by the ISO 4037_Part 1 standard for the calibration of instrument used in radiation protection, namely the Narrow spectra series, and X-ray qualities recommended by the IEC-61267 and TRS 457 standards for the calibration of instruments used in the field of conventional diagnostic radiology. In this work, we will develop at SSDL Algiers, X-ray qualities (denoted by WAV and WAH series) were developed at the German Primary Laboratory (PTB). These X-ray qualities are produced by an X-ray tube with Tungsten anode and Aluminum filtration.